<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>卡片时钟</title>
  <link rel="stylesheet" href="style.css">
</head>
<body>
  <div class="clock">
    <div class="flip">
      <div class="digital front" data-number="0"></div>
      <div class="digital back" data-number="1"></div>
    </div>
    <div class="flip">
      <div class="digital front" data-number="0"></div>
      <div class="digital back" data-number="1"></div>
    </div>
    <em class="divider">:</em>
    <div class="flip">
      <div class="digital front" data-number="0"></div>
      <div class="digital back" data-number="1"></div>
    </div>
    <div class="flip">
      <div class="digital front" data-number="0"></div>
      <div class="digital back" data-number="1"></div>
    </div>
    <em class="divider">:</em>
    <div class="flip">
      <div class="digital front" data-number="0"></div>
      <div class="digital back" data-number="1"></div>
    </div>
    <div class="flip">
      <div class="digital front" data-number="0"></div>
      <div class="digital back" data-number="1"></div>
    </div>
  </div>

  <script src="./index.js"></script>
</body>
</html>